'The Walking Dead' Spoilers: Rick's Sanity Comes Into Question

The Walking Dead’s outgoing show runner, Glen Mazzara, is revealing what fans can expect from his concluding episodes of season 3, as the midseason finale left fans with a lot of unanswered questions.

Merle and Daryl Dixon (Michael Rooker, 57, Norman Reedus, 44) are being surrounded by an angry Woodbury mob after the governor (David Morrissey, 48) accuses Merle of treason. “Daryl has spent the last year with Rick and this group, and he has worked very hard to wrestle his past demons and to become a very, very valuable member of Rick’s band,” Mazzara told Entertainment Weekly. “Now he’ll have to make choices after discovering that his brother is alive and his brother is on the opposing side. Daryl is caught in the middle and has to make choices. Can he try to bring everyone together, or does he pick a side, or does he have to go up against Rick in some way? I think it’s a very interesting arc.”

Meanwhile, Rick (Andrew Lincoln, 39) is having hallucinations and hearing imaginary phone calls, and a new group of survivors led by Tyreese (Chad Coleman) comes into the prison. “Rick’s mental state is very fragile at a time when the group needs him to be on his A-game. And he’s emotionally compromised,” says Mazzara. “His sanity is questioned and this becomes a major personal crisis not only for Rick, but for his entire group.”

The Walking Dead returns Sunday Feb. 10 on AMC. Check out a sneak peek at episode 9 "The Suicide King" below: